ircd-hybrid/modules/m_ison.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_ison.c: Provides a single line answer of whether a user is online.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id$
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h" /* ConfigFileEntry */
#include "s_serv.h" /* uplink/IsCapable */

static void do_ison(struct Client *, struct Client *, struct Client *, int, char *[]);
static void m_ison(struct Client *, struct Client *, int, char *[]);
static void ms_ison(struct Client *, struct Client *, int, char *[]);

struct Message ison_msgtab = {
  "ISON", 0, 0, 1, 1, MFLG_SLOW, 0,
  {m_unregistered, m_ison, ms_ison, m_ignore, m_ison, m_ignore}
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&ison_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&ison_msgtab);
}
const char *_version = "$Revision$";
#endif


/*
 * m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
 * with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
 * clients. Designed to reduce number of whois requests. Can process
 * nicknames in batches as long as the maximum buffer length.
 *
 * format:
 * ISON :nicklist
 */
static void
m_ison(struct Client *client_p, struct Client *source_p,
       int parc, char *parv[])
{
  struct Client *up = NULL;

  if (!ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL))
    up = uplink;

  do_ison(client_p, up, source_p, parc, parv);
}

/*
 * ms_ison added by David Taylor 04/01/2000 to handle relayed ISON requests.
 * It's slightly less bandwidth efficient than a normal ISON, but it's
 * only ever going to get relayed over one link...
 * Plus, we'll only ever relay each nick once in it's lifetime, if it
 * exists...
 * ISON :nicklist
 */
static void
ms_ison(struct Client *client_p, struct Client *source_p,
        int parc, char *parv[])
{
  if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
    do_ison(client_p, NULL, source_p, parc, parv);
}

static void
do_ison(struct Client *client_p, struct Client *up, struct Client *source_p,
        int parc, char *parv[])
{
  struct Client *target_p = NULL;
  char *nick;
  char *p;
  char *current_insert_point, *current_insert_point2;
  char buf[IRCD_BUFSIZE];
  char buf2[IRCD_BUFSIZE];
  int len;
  int i;
  int done = 0;
  int relay_to_hub = 0;

  current_insert_point2 = buf2;
  *buf2 = '\0';

  len = ircsprintf(buf, form_str(RPL_ISON), me.name, parv[0]);
  current_insert_point = buf + len;

  /* rfc1459 is ambigious about how to handle ISON
   * this should handle both interpretations.
   */
  for (i = 1; i < parc; i++)
  {
    for (nick = strtoken(&p, parv[i], " "); nick;
         nick = strtoken(&p, NULL, " "))
    {
      if ((target_p = find_person(client_p, nick)))
      {
        len = strlen(target_p->name);

        if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
        {
          memcpy(current_insert_point, target_p->name, len);
          current_insert_point += len;
          *current_insert_point++ = ' ';
        }
        else
        {
          done = 1;
          break;
        }
      }

      if (up)
      {
        /* Build up a single list, for use if we relay.. */
        len = strlen(nick);

        if ((current_insert_point2 + len + 5) < (buf2 + sizeof(buf2)))
        {
          memcpy(current_insert_point2, nick, len);
          current_insert_point2 += len;
          *current_insert_point2++ = ' ';
        }

        if (target_p == NULL)
        {
          /*
           * XXX Ick. we need to ask our hub if nick is online.
           * it's probably safest to relay the whole command,
           * unless we can answer it fully ourselves.
           * -davidt
           */
          relay_to_hub = 1;

          /* Also cache info about nick */
          sendto_one(up, ":%s NBURST %s", ID_or_name(&me, up), nick);
        }
      }
    }

    if (done)
      break;
  }

  /*  current_insert_point--;
   *  Do NOT take out the trailing space, it breaks ircII
   *  --Rodder */

  *current_insert_point  = '\0';
  *current_insert_point2 = '\0'; 
  
  if (relay_to_hub)
    sendto_one(up, ":%s ISON :%s", ID_or_name(source_p, up), buf2);
  else
    sendto_one(source_p, "%s", buf);
}
Revision:	69
Committed:	Tue Oct 4 16:09:51 2005 UTC (19 years, 10 months ago) by adx
Content type:	text/x-csrc
File size:	5118 byte(s)
Log Message:	- splitted ircd/libio, all headers connected with libio sources have been moved for internal use only. To use libio interface, include "libio.h" (which is already done in "stdinc.h")
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_ison.c: Provides a single line answer of whether a user is online.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "ircd.h"
29			#include "numeric.h"
30			#include "send.h"
31			#include "msg.h"
32			#include "parse.h"
33			#include "modules.h"
34			#include "s_conf.h" /* ConfigFileEntry */
35			#include "s_serv.h" /* uplink/IsCapable */
36
37			static void do_ison(struct Client , struct Client , struct Client , int, char []);
38			static void m_ison(struct Client , struct Client , int, char *[]);
39			static void ms_ison(struct Client , struct Client , int, char *[]);
40
41			struct Message ison_msgtab = {
42			"ISON", 0, 0, 1, 1, MFLG_SLOW, 0,
43			{m_unregistered, m_ison, ms_ison, m_ignore, m_ison, m_ignore}
44			};
45
46			#ifndef STATIC_MODULES
47			void
48			_modinit(void)
49			{
50			mod_add_cmd(&ison_msgtab);
51			}
52
53			void
54			_moddeinit(void)
55			{
56			mod_del_cmd(&ison_msgtab);
57			}
58	knight	31	const char *_version = "$Revision$";
59	adx	30	#endif
60
61
62
63			/*
64			* m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
65			* with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
66			* clients. Designed to reduce number of whois requests. Can process
67			* nicknames in batches as long as the maximum buffer length.
68			*
69			* format:
70			* ISON :nicklist
71			*/
72			static void
73			m_ison(struct Client client_p, struct Client source_p,
74			int parc, char *parv[])
75			{
76			struct Client *up = NULL;
77
78			if (!ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL))
79			up = uplink;
80
81			do_ison(client_p, up, source_p, parc, parv);
82			}
83
84			/*
85			* ms_ison added by David Taylor 04/01/2000 to handle relayed ISON requests.
86			* It's slightly less bandwidth efficient than a normal ISON, but it's
87			* only ever going to get relayed over one link...
88			* Plus, we'll only ever relay each nick once in it's lifetime, if it
89			* exists...
90			* ISON :nicklist
91			*/
92			static void
93			ms_ison(struct Client client_p, struct Client source_p,
94			int parc, char *parv[])
95			{
96			if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
97			do_ison(client_p, NULL, source_p, parc, parv);
98			}
99
100			static void
101			do_ison(struct Client client_p, struct Client up, struct Client *source_p,
102			int parc, char *parv[])
103			{
104			struct Client *target_p = NULL;
105			char *nick;
106			char *p;
107			char current_insert_point, current_insert_point2;
108			char buf[IRCD_BUFSIZE];
109			char buf2[IRCD_BUFSIZE];
110			int len;
111			int i;
112			int done = 0;
113			int relay_to_hub = 0;
114
115			current_insert_point2 = buf2;
116			*buf2 = '\0';
117
118			len = ircsprintf(buf, form_str(RPL_ISON), me.name, parv[0]);
119			current_insert_point = buf + len;
120
121			/* rfc1459 is ambigious about how to handle ISON
122			* this should handle both interpretations.
123			*/
124			for (i = 1; i < parc; i++)
125			{
126			for (nick = strtoken(&p, parv[i], " "); nick;
127			nick = strtoken(&p, NULL, " "))
128			{
129			if ((target_p = find_person(client_p, nick)))
130			{
131			len = strlen(target_p->name);
132
133			if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
134			{
135			memcpy(current_insert_point, target_p->name, len);
136			current_insert_point += len;
137			*current_insert_point++ = ' ';
138			}
139			else
140			{
141			done = 1;
142			break;
143			}
144			}
145
146			if (up)
147			{
148			/* Build up a single list, for use if we relay.. */
149			len = strlen(nick);
150
151			if ((current_insert_point2 + len + 5) < (buf2 + sizeof(buf2)))
152			{
153			memcpy(current_insert_point2, nick, len);
154			current_insert_point2 += len;
155			*current_insert_point2++ = ' ';
156			}
157
158			if (target_p == NULL)
159			{
160			/*
161			* XXX Ick. we need to ask our hub if nick is online.
162			* it's probably safest to relay the whole command,
163			* unless we can answer it fully ourselves.
164			* -davidt
165			*/
166			relay_to_hub = 1;
167
168			/* Also cache info about nick */
169			sendto_one(up, ":%s NBURST %s", ID_or_name(&me, up), nick);
170			}
171			}
172			}
173
174			if (done)
175			break;
176			}
177
178			/* current_insert_point--;
179			* Do NOT take out the trailing space, it breaks ircII
180			* --Rodder */
181
182			*current_insert_point = '\0';
183			*current_insert_point2 = '\0';
184
185			if (relay_to_hub)
186			sendto_one(up, ":%s ISON :%s", ID_or_name(source_p, up), buf2);
187			else
188			sendto_one(source_p, "%s", buf);
189			}